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Unformatted text preview: selection (more later). Several important consequences: Inversions can act as suppressors of crossing over in the heterokaryotype (= heterozygote for two different chromosomal types). An inversion does not prevent crossing over per se but the recombination products that result from a crossover within the inversion either have two centromeres and are pulled apart in division, or lack a centromere and are not transmitted. Only the unrecombined parental chromosomes are transmitted. How will the frequency of an inverted chromosome in a population affect it role as a suppressor of recombination? The more frequent the inverted type gets, it will be present in a "homokaryotypic" state and recombination will not be suppressed. If the "inverted" chromosome were fixed in the population (=100%) then we would no longer consider it "inverted"....
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- Fall '10